Megan returns to work months after Peter's death, and she is surprised by a man from her past - Tommy Sullivan, the new detective assigned to her case. Megan, along with Tommy and his rookie partner, Adam Schaeffer, must stop a serial killer whose victims are young war veterans. As she learns more about the crime, the stakes rise when she gets a call from the killer -- who is holding her teenage daughter, Lacey, hostage.

Recap

The episode begins with Megan making the Y shaped incision on the body lying on the table. She then examines the abdominal cavity and she looks shocked. Just then her phone rings; it is Lacey. She answers the call, only to hear a man’s voice telling her that she has stuck her nose into unwanted business and so now he has Lacey with him. And he wants Megan to do what she is told to. Cut to two days earlier, Megan is getting ready to go back to work; the three months she was home was a torture. At the medical center, Gross and Curtis are interviewing Charlotte, and Megan arrives. They are glad to see her back at work. ..